On Sat, 2014-10-11 at 10:39 -0700, Christoph Hellwig wrote: > On Fri, Oct 10, 2014 at 08:49:01AM +0100, Sitsofe Wheeler wrote: > > Microsoft Hyper-V virtual disks currently only claim SPC-2 compliance > > even though they implement post SPC-2 features (such as thin > > provisioning) which means the Linux kernel does not go on to test for > > those features even though they are advertised. > > > > A previous patch attempted to add a quirk to workaround this but the > > quirk was only enabled after the features had been scanned for, wouldn't > > work for "small" disks and would quirk on all Hyper-V SCSI devices > > (e.g. passthrough disks). > > > > The new patches partially revert the previous effort, add the quirk in a > > more traditional manner to only Hyper-V virtual disks and work on small > > virtual disks. > > This seems like might want a quirk to simply "force" a SPC3 compliance > level? This was initially suggested, but rejected by Microsoft because of other problems advertising SPC-3 compliance brings. Perhaps the hyper-v emulator has matured sufficiently that it will now work OK? James _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
